Avalanche Forecast
Regions: Little Yoho.
Heavy rain at low elevations in Yoho Park today resulted in wet avalanches below treeline. Areas like the Emerald Lake Slide path have not slid yet, and travel in large avalanche terrain is not recommended until the temperatures cools.
Weather Forecast
Strong westerly flow continues through until the weekend when the temperatures begin to cool. For Thursday, expect another pulse of heavy rain at low elevations in the Little Yoho region, with freezing levels reaching approximately 2000 m.
Snowpack Summary
Although these warm daytime temperatures are promoting overall snowpack settlement, the lower half of the snowpack remains poorly structured, with a weak based comprised entirely of facets and depth hoar. This problem is most pronounced in rocky, windswept terrain at treeline and higher where human triggering of full depth avalanches is possible.
Avalanche Summary
Widespread avalanche activity was observed at low elevations today in Yoho Park. Mostly in the ice climbs near Field.
Confidence
Timing of incoming weather systems is uncertain on Friday
Avalanche Problems
Loose Wet
The low elevation snowpack has lost all strength as a result of the warm temperatures and rain. Ice climbers in particular should be wary of steep gullies at and below treeline.
Aspects: All aspects.
Elevations: Alpine.
Likelihood: Possible - Likely
Expected Size: 1 - 3
Deep Persistent Slabs
Snowpack tests continue to show collapse at several levels of weak facets near the base of the snowpack. Avoid large slopes during this warm spell; wait for future cooling when the snowpack will stabilize and conditions will improve.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood: Possible
Expected Size: 2 - 3